1. The velocity of sound in air is significantly influenced by temperature. As the temperature increases, the speed of sound in air also increases. This happens because warmer air causes air molecules to gain more kinetic energy, which makes them vibrate and collide more quickly, facilitating faster trRead more

    The velocity of sound in air is significantly influenced by temperature. As the temperature increases, the speed of sound in air also increases. This happens because warmer air causes air molecules to gain more kinetic energy, which makes them vibrate and collide more quickly, facilitating faster transmission of sound waves. Conversely, as the temperature decreases, the speed of sound decreases because the air molecules have less kinetic energy, resulting in slower vibrations and collisions. The relationship between temperature and the speed of sound can be quantified using the formula:
    v = 331.3 + 0.6 x T

    where 𝑣 is the speed of sound in meters per second and 𝑇 is the temperature in degrees Celsius. Hence, colder temperatures lead to a slower speed of sound. Therefore, the correct answer is; option [D] decreases with decreasing temperature.

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  2. The speed of sound varies significantly across different mediums due to differences in density and elasticity. In general, sound travels fastest in solids, followed by liquids, and slowest in gases. This is because molecules in solids are more tightly packed and can transmit vibrations more efficienRead more

    The speed of sound varies significantly across different mediums due to differences in density and elasticity. In general, sound travels fastest in solids, followed by liquids, and slowest in gases. This is because molecules in solids are more tightly packed and can transmit vibrations more efficiently.

    At approximately 20 °C, the speed of sound in air is around 343 meters per second, in water it is about 1,480 meters per second, in granite it ranges from 5,000 to 6,000 meters per second, and in iron, it is approximately 5,120 meters per second. Among these, the speed of sound is highest in solids like granite and iron due to their dense molecular structure.

    Between granite and iron, iron typically exhibits slightly higher speeds due to its material properties. Thus, at 20 °C, the speed of sound is maximum in; option [D] Iron.

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  3. The velocity of sound depends on the medium through which it travels, varying significantly across gases, liquids, and solids. In solids, the molecules are closely packed, which allows sound waves to travel more efficiently and rapidly. Therefore, the speed of sound is highest in solids. In liquids,Read more

    The velocity of sound depends on the medium through which it travels, varying significantly across gases, liquids, and solids. In solids, the molecules are closely packed, which allows sound waves to travel more efficiently and rapidly. Therefore, the speed of sound is highest in solids. In liquids, the molecules are less tightly packed than in solids but more so than in gases, resulting in a moderate speed of sound. In gases, the molecules are farthest apart, causing the slowest transmission of sound waves.

    For instance, at room temperature, the speed of sound in air (a gas) is approximately 343 meters per second, in water (a liquid) it is about 1,480 meters per second, and in steel (a solid), it is around 5,960 meters per second. This illustrates the trend of increasing sound velocity from gases to liquids to solids. Thus, the correct answer is; option [B] Varies and is highest in solid.

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  4. Sound waves travel at different speeds depending on the medium. In solids, sound waves travel the fastest because the molecules are tightly packed, allowing for efficient transmission of vibrations from one molecule to the next. This close proximity facilitates rapid propagation of sound waves. In lRead more

    Sound waves travel at different speeds depending on the medium. In solids, sound waves travel the fastest because the molecules are tightly packed, allowing for efficient transmission of vibrations from one molecule to the next. This close proximity facilitates rapid propagation of sound waves. In liquids, the molecules are less densely packed than in solids, resulting in slower sound transmission. In gases, the molecules are spaced far apart, causing the slowest speed of sound as the vibrations take longer to travel from one molecule to another. In a vacuum, there are no molecules to transmit sound, so sound waves cannot travel at all.

    For example, at room temperature, sound travels at about 343 meters per second in air (a gas), approximately 1,480 meters per second in water (a liquid), and around 5,960 meters per second in steel (a solid). Hence, the correct answer is; option [A] In solids.

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  5. The speed of sound in air is influenced by temperature and atmospheric conditions. At room temperature, which is typically considered to be around 20°C (68°F), the speed of sound is approximately 343 meters per second (m/s). This speed decreases with lower temperatures and increases with higher tempRead more

    The speed of sound in air is influenced by temperature and atmospheric conditions. At room temperature, which is typically considered to be around 20°C (68°F), the speed of sound is approximately 343 meters per second (m/s). This speed decreases with lower temperatures and increases with higher temperatures. The variations are relatively small in everyday conditions. Given the options, 330 m/s is the closest to the actual speed of sound in air at room temperature. Accurate knowledge of the speed of sound is crucial for various applications, including aviation, acoustics, and meteorology. While precise values might be needed for scientific calculations, an approximation of 330 m/s is often sufficient for general purposes. Therefore, the correct answer is; option [A] 330 m/s.

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